This research is a magnetic resonance wireless charging system and focuses on the design of bidirectional power and data feedback using Binary Phase-Shift Keying (BPSK) technology. The system is designed to achieve two-way power transmission and data feedback simultaneously without additional wireless communication modules such as Wi-Fi, Bluetooth, ZigBee, etc. It can also simultaneously receive charging or discharging information from the secondary side or primary fed back to meet the modern electric vehicle charging and discharging to load (Vehicle to Load, V2L) function.